Re: [Hipsec] TRANSPORT_FORMAT_LIST issues in 5201-bis and 5202-bis

René Hummen <rene.hummen@comsys.rwth-aachen.de> Wed, 26 June 2013 11:21 UTC

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From: René Hummen <rene.hummen@comsys.rwth-aachen.de>
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Date: Wed, 26 Jun 2013 13:21:11 +0200
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Subject: Re: [Hipsec] TRANSPORT_FORMAT_LIST issues in 5201-bis and 5202-bis
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On 26.06.2013, at 11:58, René Hummen <rene.hummen@comsys.rwth-aachen.de> wrote:

[...]

> Regarding 5202-bis:
> ----------------------------
> There is currently no reference to the TRANSPORT_FORMAT_LIST parameter in this document. Here, we need to specify the transform format type for IPsec ESP. I suggest to add the following new section to the document [7]:
> "4.1.1 IPsec ESP Transport Format Type
> The HIP handshake signals the TRANSPORT_FORMAT_LIST parameter in the R1 and I2 messages. This parameter contains a list of the supported HIP transport formats  of the sending host in the order of preference. The transport format type for IPsec ESP is X (TBD)."

According to 5201-bis, the transport format type is defined as [1]:
"The TF type numbers correspond to the HIP parameter type numbers of the respective transform parameters."

Hence, the last sentence of my suggested text should rather read as follows:
"The transport format type for IPsec ESP is the type number of the ESP_TRANSFORM parameter, i.e., 4095."


BR
René

[1] http://tools.ietf.org/html/draft-ietf-hip-rfc5201-bis-11#section-5.2.11

--
Dipl.-Inform. Rene Hummen, Ph.D. Student
Chair of Communication and Distributed Systems
RWTH Aachen University, Germany
tel: +49 241 80 21429
web: http://www.comsys.rwth-aachen.de/team/rene-hummen/